In-Situ High-Temperature Magnetic Resonance Imaging of Coals Using Prepared Magnetization SPRITE Techniques
In-Situ High-Temperature Magnetic Resonance Imaging of Coals Using Prepared Magnetization SPRITE Techniques
复制标题
使用制备的磁化 SPRITE 技术对煤进行原位高温磁共振成像
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
K. Katoh
中科院分区：
文献类型：
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作者：
Koji Saito;K. Hasegawa;I. Komaki;K. Katoh
在本文中，我们首先展示了3D-SPRITE已被证明是成功的研究短弛豫时间系统，这是免费的扭曲由于煤的磁化率变化。并结合两种煤的移动的组分的三维分布对所得结果进行了讨论。同时，为了更好地揭示煤的化学非均质性，还进行了基于SPRITE方法的T1作图和T2 * 作图等反演恢复准备实验。此外，我们还利用我们新开发的高温显微成像探针和系统，首次对25 ° C至600 °C的煤进行了系统的原位变温NMR显微成像研究，以阐明非均质煤样中高温下移动的组分的行为。提出了煤的软化熔融机理和基于局部信息的煤的软化熔融特性原位成像制图方法。
In this paper, we are at first demonstrating 3D-SPRITE which has been shown to be successful for studying short relaxation time systems and which is free from distortions due to susceptibility variations for coals. The results obtained were discussed in relation to the three-dimensional distribution of mobile components for two kinds of coal. At the same time, inversion recovery preparation experiments, for example, T 1 mapping and T 2 * mapping based on SPRITE methods are presented in order to clarify the chemical heterogeneity of coals. Also, we have carried out the first systematic in-situ variable-temperature NMR microimaging study of coals between 25 and 600 °C with our newly developed high-temperature microimaging probe and systems in order to clarify the behavior of mobile components at high temperatures in heterogeneous coal specimens. Both the mechanism of softening and melting process for coals and the coal mapping for the softening and melting properties using in-situ imaging experiments which are based on the local information are proposed.
影响因子：
2.2
作者：
Cheng, LL;Chang, IW;Gonzalez, RG
通讯作者：
Gonzalez, RG